CN110318012A - A kind of self-lubricating nickel-based composite and preparation method thereof - Google Patents
A kind of self-lubricating nickel-based composite and preparation method thereof Download PDFInfo
- Publication number
- CN110318012A CN110318012A CN201910523026.7A CN201910523026A CN110318012A CN 110318012 A CN110318012 A CN 110318012A CN 201910523026 A CN201910523026 A CN 201910523026A CN 110318012 A CN110318012 A CN 110318012A
- Authority
- CN
- China
- Prior art keywords
- nickel
- self
- lubricating
- based composite
- graphite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/08—Iron group metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Abstract
Self-lubricating nickel-based composite of the invention is mainly made of the raw material of following mass percent: nickel 82% ~ 90%, copper 2% ~ 6%, modified graphite 6% ~ 8%, carbon fiber 2% ~ 4%；The modified graphite is the graphite of plating nickel on surface.The present invention is acted on using the mutual cooperation between each raw material, is improved room temperature bending strength, surface hardness and the toughness of self-lubricating nickel-based composite, is reduced the coefficient of friction of nickel-based self-lubricating material.The preparation method of self-lubricating nickel-based composite of the invention enormously simplifies production technology, avoid the use of the processes such as isostatic cool pressing and secondary operation, green density is improved, the generation of Crack prevention improves the mechanical property and service performance of self-lubricating nickel-based composite.
Description
Technical field
The invention belongs to self-lubricating material technical fields, and in particular to a kind of self-lubricating nickel-based composite and its preparation side
Method.
Background technique
Self-lubricating nickel-based composite is usually used in the preparation of bearing, and the bearing being prepared is usually used in transmission and supporting part
Part.Bearing easily fails due to lubricant environment is poor, and bearing is caused to wear rapidly in application process.Especially it is situated between in high-temperature water
The bearing applied under matter environment usually due to the particular surroundings (such as radiation high, temperature height) in the industrial circles such as nuclear energy, chemical industry,
It can not be only capable of using aqueous medium as lubrication, this allows for traditional with hexagonal boron nitride, curing using grease as lubrication
Tungsten or molybdenum disulfide etc. as the self-lubricating material of self-lubricating constituent element there is technical issues that it is susceptible to hydrolysis and.For
This technical problem, self-lubricating material in the prior art are used as self-lubricating constituent element, self-lubrication using graphite, metal etc.
Mechanism are as follows: be brought on friction surface by the graphite under being ground in composite material and form continuous solid lubricant film, improve lubricious strip
Part.Solve that self-lubricating material is susceptible to hydrolysis as self-lubricating constituent element using graphite, metal etc. and the technology that is not available is asked
Topic, but due to being used as self-lubricating constituent element using graphite, metal etc., cause the strength reduction of self-lubricating material, reduce and use
Service life.
Application publication number is that the Chinese patent application of CN101812648A discloses a kind of carbon fiber for substituting traditional bearing
Retainer composite material is constituted as follows: copper powder 3~5% by weight percentage；Graphite 4~6%；Carbon fiber powder 10~12%；It is remaining
Amount is nickel powder, and by high temperature mixing, die forming pressurization, sintering, ftercompction, annealing are made again.Wherein, high temperature mixes are as follows: will
Copper powder, nickel powder and graphite mix on tumbling ball mill, and mixing method uses dry pigmentation, ratio of grinding media to material 2:1, mixing time
20h；When again by copper powder, nickel powder and graphite mixing high temperature to 1200~1300 DEG C of fusings, use in tube with argon gas with wind
Mode by carbon fiber powder be gradually added into and it is non-stop the copper powder and nickel powder and graphite that have melted are stirred, be added rate
Depending on the amount of capacity of high temperature furnace, to be added for the purpose of the carbon fiber powder in furnace sufficiently stirs evenly with other media objects,
The time usually stirred is 1~2h, but must keep being stirred on the basis of former 1200~1300 DEG C melted.Die forming
Pressurization are as follows: the copper and mickel melted and being evenly distributed on has been melted into graphite in medium and carbon fiber is poured into mold, has been dropped
It gradually pressurizes after to 600~800 DEG C, after being gradually decreased to room temperature when pressure reaches 100MPa, waiting pressure quietly is 3~4h.
Again it is sintered are as follows: be sintered on vacuum carbon tube furnace, 1200~1300 DEG C of sintering temperature, 1~2h of sintering time.Ftercompction are as follows: in oil
Ftercompction on press, 600~700MPa of ftercompction pressure.Annealing are as follows: it anneals on vacuum carbon tube furnace, 800~900 DEG C of annealing temperature,
1~2h of sintering time.That there are room temperature bending strengths is low for the composite material, and surface hardness is low, and toughness is poor, coefficient of friction mistake
Technical problem high, abrasion loss is excessive.And there is complication during the preparation process in the composite material, green density is too low, easily produces
The technical problems such as raw crackle.
Therefore, urgent need will develop a kind of novel self-lubricating composite material, come while improving the room of self-lubricating composite
Warm bending strength, surface hardness and toughness reduce coefficient of friction and abrasion loss.
Summary of the invention
The first purpose of this invention is to provide a kind of self-lubricating nickel-based composite, to solve existing nickel-based self-lubricating
The room temperature bending strength of composite material is low, and surface hardness is low, and toughness is poor, the excessively high problem of coefficient of friction.
Second object of the present invention is to provide a kind of preparation method of self-lubricating nickel-based composite, existing to solve
The problem of self-lubricating nickel-based composite exists during the preparation process to be complicated, and green density is too low, is also easy to produce crackle.
To achieve the above object, the technical scheme is that
A kind of self-lubricating nickel-based composite is mainly made of the raw material of following mass percent: nickel 82%~90%, copper
2%~6%, modified graphite 6%~8%, carbon fiber 2%~4%；The modified graphite is the graphite of plating nickel on surface.
The mechanism of action is as follows between each raw material in self-lubricating nickel-based composite of the invention: firstly, addition quality
The nickel that percentage is 82%~90%, improves the elevated temperature strength and radiation resistance of self-lubricating nickel-based composite.Secondly, adding
Adding mass percent is 2%~6% copper, and the nickel mutual cooperation that the mass percent being added with early period is 82%~90% is made
For the matrix constituent element of self-lubricating nickel-based composite, so that weight concentration of the copper in nickel is 2.17%~6.82%, this is specific
Weight concentration can be improved the mechanical property of self-lubricating nickel-based composite.Selecting mass percent again is 6%~8%
The carbon fiber that modified graphite and mass percent are 2%~4%, the lubricant component as self-lubricating nickel-based composite.One side
Face modified graphite and carbon fiber can provide good self-lubrication, another aspect modified graphite for self-lubricating nickel-based composite
The wellability in self-lubricating nickel-based composite between matrix constituent element and lubricant component can be improved, and then improve nickel-based self-lubricating
Bond strength in composite material between matrix constituent element and lubricant component, to further improve the mechanical property of composite material
Energy.
Self-lubricating nickel-based composite of the invention had not only had a corrosion-resistant, radiation hardness and characteristic resistant to high temperature, but also can be
It is used under aqueous medium, radiation and hot environment；Room temperature bending strength is greater than 300MPa, and surface hardness is greater than 60HBW, impact flexibility
Greater than 13J/cm2, coefficient of friction is 0.15~0.20, and the abrasion loss of reciprocating friction is tested after the load 15min under 20N load
Less than 0.03mm3。
Further to improve the mixing uniformity between nickel, modified graphite and carbon fiber, and keep mixed raw material
Certain mobility is presented, it is preferred that the nickel is the nickel powder that partial size is 320 mesh.
To further increase the degree of dissolving each other between copper and nickel, alloy rate is improved, it is preferred that the copper is that partial size is
The copper powder of 200 mesh.
To further increase the bond strength between lubricant component and matrix, the mechanics of self-lubricating nickel-based composite is improved
Performance, it is preferred that the graphite is at least one of aquadag, crystalline flake graphite, and phosphorus content is greater than in the modified graphite
95%.
For room temperature bending strength, the surface hardness, impact flexibility for further increasing self-lubricating nickel-based composite, nickel is reduced
The coefficient of friction and abrasion loss of based self lubricated composite material, it is preferred that the carbon fiber is the carbon fiber of plating nickel on surface.
To further increase the bond strength in self-lubricating nickel-based composite between matrix constituent element and lubricant component, improve
The mechanical property of composite material, it is preferred that the plating nickel on surface is electroplating nickel on surface, chemical nickel plating on surface or surface vapor deposition
Nickel plating.
A kind of preparation method of self-lubricating nickel-based composite, comprising the following steps:
The raw material of following mass percent is mixed: nickel 82%~90%, copper 2%~6%, modified graphite 6%~8%,
Carbon fiber 2%~4%, the modified graphite are the graphite of plating nickel on surface, obtain mixed-powder；Mixed-powder vacuum hotpressing is burnt
Knot, it is cooling to get.
Self-lubricating nickel-based composite of the invention during the preparation process, has selected the raw material of specific composition, that is, select with
The raw material of lower weight percent mixes: nickel 82%~90%, copper 2%~6%, modified graphite 6%~8%, and carbon fiber 2%~
4%, modified graphite is the graphite of plating nickel on surface, can improve the wellability between lubricant component and matrix constituent element, so that Ni-based
Self-lubricating composite can greatly simplify production technology during the preparation process, avoid the processes such as isostatic cool pressing and secondary operation
It uses, improves green density, the generation of Crack prevention, the nickel-based self-lubricating being prepared using vacuum heating-press sintering method is compound
Room temperature bending strength, surface hardness and the impact flexibility of material are improved, and coefficient of friction and abrasion loss are dropped
It is low.
To further increase the uniformity between each raw material, it is preferred that be ball milling, the time of ball milling the step of the mixing
It is 36~48 hours, mill is situated between than being (2~5): 1.
For the agglutinating property and tissue homogeneity for further increasing self-lubricating nickel-based composite, it is preferred that vacuum hotpressing is burnt
The condition of knot are as follows: under vacuum condition, to 1100 DEG C~1300 DEG C and 50min~100min is kept the temperature from room temperature, at 1100 DEG C
Sintering pressure at~1300 DEG C is 15MPa~30MPa, continues to sintering pressure after heat preservation, when be cooled to 700 DEG C~
At 1000 DEG C pressure release and 700 DEG C~1000 DEG C at a temperature of keep the temperature 60min~120min.
For the performance for further increasing self-lubricating nickel-based composite, it is preferred that the vacuum degree of the vacuum condition is 10- 3Pa~10-2Pa, 700 DEG C~1000 DEG C at a temperature of heat preservation 60min~120min after there are also with furnace be cooled to room temperature, release
Vacuum, the step of coming out of the stove.
The application of the present invention any one self-lubricating nickel-based composite above-mentioned within the bearing.
Detailed description of the invention
Fig. 1 is the hot-pressing process curve figure of the preparation method embodiment 3 of self-lubricating nickel-based composite of the invention；
Fig. 2 is Ni-based from profit for what is be prepared in the preparation method embodiment 1 of self-lubricating nickel-based composite of the invention
The room temperature PVvalue testing result figure of sliding composite material.
Specific embodiment
Embodiments of the present invention are described further combined with specific embodiments below.In following embodiment, nickel, nickel
Powder, electrolytic nickel powder, copper, copper powder, electrolytic copper powder, modified graphite, the graphite of plating nickel on surface, electroplating nickel on surface graphite, come to the surface
Graphite, the surface vapor of nickel plating deposit the colloid stone of the graphite of nickel plating, the aquadag of electroplating nickel on surface, chemical nickel plating on surface
Ink, surface vapor deposit crystalline flake graphite, the table of the aquadag of nickel plating, the crystalline flake graphite of electroplating nickel on surface, chemical nickel plating on surface
Face be vapor-deposited the crystalline flake graphite of nickel plating, carbon fiber, carbon fiber powder, the carbon fiber of plating nickel on surface, electroplating nickel on surface carbon fiber,
The carbon fiber of chemical nickel plating on surface, the carbon fiber of surface vapor deposition nickel plating, graphite jig, mixing, ball milling, vacuum hotpressing are burnt
The equipment such as knot, cooling and raw material can be obtained by commercially available conven-tional channels.The preparation of self-lubricating nickel-based composite can also adopt
With the preparation method that can arbitrarily prepare self-lubricating nickel-based composite in the prior art.Used in vacuum heating-press sintering process
Equipment is vacuum sintering funace.The material of grinding jar and abrading-ball that ball milling uses is stainless steel, the process of vacuum heating-press sintering
Used in mold be graphite jig.
Self-lubricating nickel-based composite of the invention is mainly made of the raw material of following mass percent: nickel 82%~
90%, copper 2%~6%, modified graphite 4%~8%, carbon fiber 2%~4%；The modified graphite is the graphite of plating nickel on surface.
Preferably, the carbon fiber is carbon fiber powder.
Preferably, nickel powder is electrolytic nickel powder.
Preferably, copper powder is electrolytic copper powder.
The preparation method of self-lubricating nickel-based composite of the invention, comprising the following steps:
The raw material of following mass percent is mixed: nickel 82%~90%, copper 2%~6%, modified graphite 4%~8%,
Carbon fiber 2%~4%, the modified graphite are the graphite of plating nickel on surface, obtain mixed-powder；Mixed-powder vacuum hotpressing is burnt
Knot, it is cooling to get.
Preferably, the nickel is the nickel powder that partial size is 320 mesh.
Preferably, the copper is the copper powder that partial size is 200 mesh.
Preferably, the graphite is at least one of aquadag, crystalline flake graphite, and phosphorus content is big in the modified graphite
In 95%.
Preferably, the carbon fiber is carbon fiber powder.
Preferably, the carbon fiber is the carbon fiber of plating nickel on surface.
Preferably, the plating nickel on surface is that electroplating nickel on surface, chemical nickel plating on surface or surface vapor deposit nickel plating.
Preferably, nickel powder is electrolytic nickel powder.
Preferably, copper powder is electrolytic copper powder.
The embodiment 1 of self-lubricating nickel-based composite of the invention
The self-lubricating nickel-based composite of the present embodiment uses vacuum hotpressing legal system by the raw material of following mass percent
At: the electrolytic nickel powder 90% of 320 mesh, the electrolytic copper powder 2% of 200 mesh, the aquadag powder 6% of chemical nickel plating on surface, carbon fiber
Powder 2%.
The preparation method embodiment 1 of self-lubricating nickel-based composite of the invention
The preparation method of the self-lubricating nickel-based composite of the present embodiment, comprising the following steps:
The raw material of following weight percent is mixed: the electrolytic nickel powder 90% of 320 mesh, the electrolytic copper powder 2% of 200 mesh, table
The aquadag powder 6% of face chemical nickel plating, carbon fiber powder 2%；Specific mixed process is to weigh respectively according to weight percent
The electrolytic nickel powder of 320 mesh, the electrolytic copper powder of 200 mesh, chemical nickel plating on surface aquadag powder and carbon fiber powder, its whole is set
Dry-mixed in ball mill, revolving speed 100r/min, mill is situated between than being 3:1, and grinding jar and abrading-ball are stainless steel material, and Ball-milling Time is
48 hours, obtain uniform mixed-powder；Obtained mixed-powder is subjected to vacuum heating-press sintering, it is cooling to get；Specific vacuum
Hot pressed sintering is that obtained mixed-powder is fitted into the graphite jig for being coated with hexagonal boron nitride, is then placed in vacuum hotpressing burning
Vacuum heating-press sintering is carried out in freezing of a furnace, vacuum degree is 1 × 10 in furnace chamber-2Pa to 1200 DEG C and keeps the temperature 50min from room temperature,
Sintering pressure at 1200 DEG C is 20MPa, sintering pressure is continued to after heat preservation, and cool down with furnace, when being cooled to 700
DEG C when pressure release and 700 DEG C at a temperature of keep the temperature 120min, be cooled to room temperature with furnace, discharge vacuum, come out of the stove.
The embodiment 2 of self-lubricating nickel-based composite of the invention
The self-lubricating nickel-based composite of the present embodiment uses vacuum hotpressing legal system by the raw material of following mass percent
At: the electrolytic nickel powder 82% of 320 mesh, the electrolytic copper powder 6% of 200 mesh, the crystalline graphite powder 8% of chemical nickel plating on surface, carbon fiber
Powder 4%.
The preparation method embodiment 2 of self-lubricating nickel-based composite of the invention
The preparation method of the self-lubricating nickel-based composite of the present embodiment, comprising the following steps:
The raw material of following weight percent is mixed: the electrolytic nickel powder 82% of 320 mesh, the electrolytic copper powder 6% of 200 mesh, table
The crystalline graphite powder 8% of face chemical nickel plating, carbon fiber powder 4%；Specific mixed process is to weigh respectively according to weight percent
The electrolytic nickel powder of 320 mesh, the electrolytic copper powder of 200 mesh, chemical nickel plating on surface crystalline graphite powder and carbon fiber powder, its whole is set
Dry-mixed in ball mill, revolving speed 100r/min, mill is situated between than being 2:1, and grinding jar and abrading-ball are stainless steel material, and Ball-milling Time is
48 hours, obtain uniform mixed-powder；Obtained mixed-powder is subjected to vacuum heating-press sintering, it is cooling to get；Specific vacuum
Hot pressed sintering is that obtained mixed-powder is fitted into the graphite jig for being coated with hexagonal boron nitride, is then placed in vacuum hotpressing burning
Vacuum heating-press sintering is carried out in freezing of a furnace, vacuum degree is 5 × 10 in furnace chamber-3Pa to 1100 DEG C and keeps the temperature 100min from room temperature,
Sintering pressure at 1100 DEG C is 15MPa, sintering pressure is continued to after heat preservation, and cool down with furnace, when being cooled to 900
DEG C when pressure release and 900 DEG C at a temperature of keep the temperature 60min, be cooled to room temperature with furnace, discharge vacuum, come out of the stove.
The embodiment 3 of self-lubricating nickel-based composite of the invention
The self-lubricating nickel-based composite of the present embodiment uses vacuum hotpressing legal system by the raw material of following mass percent
At: the electrolytic nickel powder 84% of 320 mesh, the electrolytic copper powder 6% of 200 mesh, the aquadag powder 2% of electroplating nickel on surface, surface chemistry
The crystalline graphite powder 6% of nickel plating, the carbon fiber powder 2% of chemical nickel plating on surface.
The preparation method embodiment 3 of self-lubricating nickel-based composite of the invention
The preparation method of the self-lubricating nickel-based composite of the present embodiment, comprising the following steps:
The raw material of following weight percent is mixed: the electrolytic nickel powder 84% of 320 mesh, the electrolytic copper powder 6% of 200 mesh, table
The aquadag powder 2% of face electronickelling, the crystalline graphite powder 6% of chemical nickel plating on surface, the carbon fiber powder of chemical nickel plating on surface
2%；Specific mixed process is to weigh the electrolytic nickel powder of 320 mesh, the electrolytic copper powder of 200 mesh, surface respectively according to weight percent
Aquadag powder, the crystalline graphite powder of chemical nickel plating on surface and the carbon fiber powder of chemical nickel plating on surface of electronickelling, by its whole
It is placed in dry-mixed in ball mill, revolving speed 100r/min, mill is situated between than being 5:1, and grinding jar and abrading-ball are stainless steel material, Ball-milling Time
It is 48 hours, obtains uniform mixed-powder；Obtained mixed-powder is subjected to vacuum heating-press sintering, it is cooling to get；It is specific true
Empty hot pressed sintering is that obtained mixed-powder is fitted into the graphite jig for being coated with hexagonal boron nitride, is then placed in vacuum hotpressing
Vacuum heating-press sintering (see Fig. 1) is carried out in sintering furnace, vacuum degree is 1 × 10 in furnace chamber-3Pa to 1300 DEG C and is protected from room temperature
Warm 60min, the sintering pressure at 1300 DEG C is 30MPa, sintering pressure is continued to after heat preservation, and cool down with furnace, when
When being cooled to 1000 DEG C pressure release and 1000 DEG C at a temperature of keep the temperature 90min, be cooled to room temperature with furnace, discharge vacuum, come out of the stove.
Comparative example 1
The comparative example 1 of self-lubricating nickel-based composite of the invention
The self-lubricating nickel-based composite of the present embodiment uses vacuum hotpressing legal system by the raw material of following mass percent
At: the electrolytic nickel powder 84% of 320 mesh, the electrolytic copper powder 6% of 200 mesh, graphite powder 8%, carbon fiber powder 2%.
The preparation method comparative example 1 of self-lubricating nickel-based composite of the invention
The preparation method of the self-lubricating nickel-based composite of the present embodiment, comprising the following steps:
The raw material of following weight percent is mixed: the electrolytic nickel powder 84% of 320 mesh, the electrolytic copper powder 6% of 200 mesh, stone
Ink powder 8%, carbon fiber powder 2%；Specific mixed process is the electrolytic nickel powder for weighing 320 mesh respectively according to weight percent, 200
Its whole, is placed in dry-mixed in ball mill, revolving speed 100r/min by purpose electrolytic copper powder, graphite powder, carbon fiber powder, and mill Jie's ratio is
3:1, grinding jar and abrading-ball are stainless steel material, and Ball-milling Time is 48 hours, obtain uniform mixed-powder；The mixing that will be obtained
Powder carries out vacuum heating-press sintering, it is cooling to get；Specific vacuum heating-press sintering is that the loading of obtained mixed-powder is coated with six
It in the graphite jig of square boron nitride, is then placed in vacuum sintering funace and carries out vacuum heating-press sintering, vacuum degree is 1 in furnace chamber
×10-3Pa to 1300 DEG C and keeps the temperature 60min from room temperature, and the sintering pressure at 1300 DEG C is 30MPa, after heat preservation
Continue to sintering pressure, when being cooled to 900 DEG C pressure release and 900 DEG C at a temperature of keep the temperature 90min, be cooled to room with furnace
Temperature, vacuum breaker are come out of the stove.
Test example:
Friction and wear behavior test:
Using the friction and wear behavior of CFT-I type material surface property comprehensive tester test material, by nickel of the invention
The preparation method Examples 1 to 3 of based self lubricated composite material and the preparation method pair of self-lubricating nickel-based composite of the invention
It is 10.5 × 10.5 × 5mm that self-lubricating nickel-based composite obtained in ratio 1, which is fabricated to size,3Disk tested,
Mating plate is that GCr15 quenches bearing steel ball.Test process is as follows: under room temperature, loaded load 20N, runing time 15
Minute.
As the result is shown: self-lubricating nickel-based composite coefficient of friction of the invention is 0.166-0.194 (being shown in Table 1 and Fig. 2),
Less than the coefficient of friction 0.233 in comparative example 1；Self-lubricating nickel-based composite abrasion loss of the invention is less than 0.03mm3, it is less than
Abrasion loss 0.532mm in comparative example 13, show that there is lower coefficient of friction by self-lubricating nickel-based composite of the invention
And abrasion loss, friction and wear behavior is excellent, and self-lubricating property is excellent.
Apparent hardness, cross-breaking strength, impact toughness performance test:
The test of apparent hardness, cross-breaking strength, impact toughness performance, it is compound using nickel-based self-lubricating in the prior art
The test method of material.
As the result is shown: self-lubricating nickel-based composite apparent hardness of the invention be 60.2-64.6 (being shown in Table 1), be greater than pair
Apparent hardness 55 in ratio 1；Self-lubricating nickel-based composite cross-breaking strength of the invention is 305-437, is greater than comparison
Cross-breaking strength 226 in example 1；Self-lubricating nickel-based composite impact toughness of the invention is 13.0-14.0, is greater than comparison
Impact toughness 7.5 in example 1；Show by self-lubricating nickel-based composite apparent hardness with higher of the invention, laterally to break
Resistance to spalling and impact toughness performance, have excellent performance.
The comparison of 1 self-lubricating nickel-based composite performance of table
| Test item/unit | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 |
| Apparent hardness/HBW | 64.6 | 69.5 | 60.2 | 55 |
| Cross-breaking strength/MPa | 358 | 437 | 305 | 226 |
| Impact toughness/J/cm2 | 13.5 | 14.0 | 13.0 | 7.5 |
| Coefficient of friction | 0.166 | 0.194 | 0.192 | 0.233 |
| Abrasion loss/mm3 | 0.028 | 0.027 | 0.030 | 0.532 |
Claims (10)
1. a kind of self-lubricating nickel-based composite, which is characterized in that be mainly made of the raw material of following mass percent: nickel 82% ~
90%, copper 2% ~ 6%, modified graphite 6% ~ 8%, carbon fiber 2% ~ 4%；The modified graphite is the graphite of plating nickel on surface.
2. self-lubricating nickel-based composite as described in claim 1, which is characterized in that the nickel is the nickel that partial size is 320 mesh
Powder.
3. self-lubricating nickel-based composite as described in claim 1, which is characterized in that the copper is the copper that partial size is 200 mesh
Powder.
4. self-lubricating nickel-based composite as described in claim 1, which is characterized in that the graphite is aquadag, scale
At least one of graphite, phosphorus content is greater than 95% in the modified graphite.
5. self-lubricating nickel-based composite as described in claim 1, which is characterized in that the carbon fiber is the carbon of plating nickel on surface
Fiber.
6. self-lubricating nickel-based composite according to any one of claims 1 to 5, which is characterized in that the plating nickel on surface is
Electroplating nickel on surface, chemical nickel plating on surface or surface vapor deposit nickel plating.
7. a kind of preparation method of self-lubricating nickel-based composite, which comprises the following steps:
The raw material of following mass percent is mixed: nickel 82% ~ 90%, copper 2% ~ 6%, modified graphite 6% ~ 8%, carbon fiber 2% ~ 4%, institute
The graphite that modified graphite is plating nickel on surface is stated, mixed-powder is obtained；By mixed-powder vacuum heating-press sintering, it is cooling to get.
8. the preparation method of self-lubricating nickel-based composite as claimed in claim 7, which is characterized in that the step of the mixing
For ball milling, the time of ball milling is 36 ~ 48 hours, and mill is situated between than being (2 ~ 5): 1.
9. the preparation method of self-lubricating nickel-based composite as claimed in claim 7, which is characterized in that vacuum heating-press sintering
Condition are as follows: under vacuum condition, to 1100 DEG C ~ 1300 DEG C and 50min ~ 100min is kept the temperature from room temperature, at 1100 DEG C ~ 1300 DEG C
Under sintering pressure be 15MPa ~ 30MPa, continue to sintering pressure after heat preservation, let out when being cooled to 700 DEG C ~ 1000 DEG C
Press and 700 DEG C ~ 1000 DEG C at a temperature of keep the temperature 60min ~ 120min.
10. the preparation method of self-lubricating nickel-based composite as claimed in claim 9, which is characterized in that the vacuum condition
Vacuum degree be 1 × 10-3Pa~1×10-2Pa, 700 DEG C ~ 1000 DEG C at a temperature of heat preservation 60min ~ 120min after there are also with furnace
The step of being cooled to room temperature, discharging vacuum, come out of the stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910523026.7A CN110318012B (en) | 2019-06-17 | 2019-06-17 | Nickel-based self-lubricating composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910523026.7A CN110318012B (en) | 2019-06-17 | 2019-06-17 | Nickel-based self-lubricating composite material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110318012A true CN110318012A (en) | 2019-10-11 |
| CN110318012B CN110318012B (en) | 2021-05-11 |
Family
ID=68119672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910523026.7A Active CN110318012B (en) | 2019-06-17 | 2019-06-17 | Nickel-based self-lubricating composite material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110318012B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111001811A (en) * | 2019-12-17 | 2020-04-14 | 陕西科技大学 | Wide-temperature-range Ni taking Cu @ Ni core-shell structure as lubricating phase3Al-based self-lubricating composite material and preparation method thereof |
| CN111705231A (en) * | 2020-07-03 | 2020-09-25 | 毛金昌 | Nickel-based copper-clad graphite self-lubricating composite material and sintering method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10298582A (en) * | 1997-04-30 | 1998-11-10 | Fuji Dies Kk | Self-lubrication composite material |
| CN1782041A (en) * | 2004-11-30 | 2006-06-07 | 中国科学院兰州化学物理研究所 | Nickel base self lubricating material for water lubrication and its preparing method |
| CN101812648A (en) * | 2010-03-16 | 2010-08-25 | 大连三木得科技有限公司 | Carbon fiber retainer composite material capable of substituting traditional bearing |
-
2019
- 2019-06-17 CN CN201910523026.7A patent/CN110318012B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10298582A (en) * | 1997-04-30 | 1998-11-10 | Fuji Dies Kk | Self-lubrication composite material |
| CN1782041A (en) * | 2004-11-30 | 2006-06-07 | 中国科学院兰州化学物理研究所 | Nickel base self lubricating material for water lubrication and its preparing method |
| CN101812648A (en) * | 2010-03-16 | 2010-08-25 | 大连三木得科技有限公司 | Carbon fiber retainer composite material capable of substituting traditional bearing |
Non-Patent Citations (1)
| Title |
|---|
| 张洪龙: "镍基高温复合自润滑材料的制备与性能研究", 《中国优秀博硕士论文全文数据库（硕士） 工程科技I辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111001811A (en) * | 2019-12-17 | 2020-04-14 | 陕西科技大学 | Wide-temperature-range Ni taking Cu @ Ni core-shell structure as lubricating phase3Al-based self-lubricating composite material and preparation method thereof |
| CN111001811B (en) * | 2019-12-17 | 2022-03-01 | 陕西科技大学 | Wide-temperature-range Ni taking Cu @ Ni core-shell structure as lubricating phase3Al-based self-lubricating composite material and preparation method thereof |
| CN111705231A (en) * | 2020-07-03 | 2020-09-25 | 毛金昌 | Nickel-based copper-clad graphite self-lubricating composite material and sintering method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110318012B (en) | 2021-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105908049B (en) | A kind of high-entropy alloy based self lubricated composite material and preparation method thereof | |
| CN107058808B (en) | A kind of aluminium alloy base solid lubricating composite material and preparation method thereof | |
| CN112276076B (en) | Preparation method of wide-temperature-range high-entropy alloy-based solid lubricating composite material | |
| CN110318012A (en) | A kind of self-lubricating nickel-based composite and preparation method thereof | |
| CN106077609A (en) | High tenacity iron-base steam valve base made by powder metallurgy | |
| CN114645180B (en) | Double-phase reinforced aluminum alloy and preparation method thereof | |
| CN109402435A (en) | A kind of wide temperature range self-lubrication alloy of nickel aluminium base and preparation method thereof | |
| CN106086525A (en) | A kind of low friction nickel-base high-temperature self-lubricating composite and preparation method thereof | |
| CN104878272A (en) | Nickel aluminum/copper oxide high-temperature self-lubricating composite material and preparation method thereof | |
| CN106939381A (en) | A kind of copper silver-based self-lubricating composite and preparation method thereof | |
| CN103627921B (en) | A kind of interpolation WS 2and MoS 2copper radical self-lubricating matrix material and preparation method thereof | |
| CN111705231A (en) | Nickel-based copper-clad graphite self-lubricating composite material and sintering method thereof | |
| CN109468494B (en) | Wear-resistant net-shaped Cr3C2Preparation method of reinforced NiAl alloy | |
| CN109022924B (en) | High-strength corrosion-resistant solid lubricating material in seawater environment | |
| CN101709412A (en) | Nickel-based bearing retainer material and preparation method thereof | |
| CN111575605A (en) | Stainless steel-based valve seat ring material for CNG engine and preparation method thereof | |
| CN113681009B (en) | Friction oxidation regulation surface generation self-supplement lubricating phase composite material and preparation method thereof | |
| CN113430421B (en) | High-strength nickel-niobium-based wide-temperature-range self-lubricating alloy | |
| CN114749658A (en) | Preparation method of composite rare earth element reinforced powder metallurgy friction material | |
| CN109487124B (en) | Aluminum-based wear-resistant material under sulfur-containing corrosion working condition and preparation method thereof | |
| CN113234987B (en) | WC/Fe composite material and preparation method thereof | |
| CN117020196A (en) | High-strength low-cost self-supplementing lubricating phase composite material and preparation method thereof | |
| CN115341127B (en) | Self-lubricating high-entropy alloy and preparation method and application thereof | |
| CN115786756B (en) | Compact Mo2NiB2Preparation method of base metal ceramic | |
| CN1036796C (en) | High-temp self-lubricating metal-ceramic material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |